Since I'm using aspire et-s tanks I use mine with the ego adapter. Haven't found anywhere that sells the folding one, guess I didn't look hard enough. Anyway, I was having issues with a leaky tank, had to take the adapter off, ran it under some hot water cleaned & dried, didn't seem to have any issues after that. Just sharing some of my experiences. Seemed to make it taste a little better, guess it was getting gunky build up.
